Re: Two 6v batteries,12v charge

When you charge 2 in series as you are saying, the total charging current flows through BOTH batteries & when one is already fully charged, it will experience over-charging all the time that you are trying to charge the other battery. If you keep the electrolyte level up in it, it will help it survive, but is not good for that battery. Careful with the out gassing & sparks or you could hurt yourself.

Well with 5 -6 volt batteries you could try an series parrel (sp) thing so you are charging 4 of them at a time with a 12 volt charger. In theory it would work well and all 4 would get charged and that way in theory at least 2 of the 4 would get a full charge if one was in fact weak or bad. But again all that is theory and you know how theory can be and that is why the bumble bee can fly he does not understand the theory in physics

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